Engine.



G. -l.` LEONARD.

ENGINE.

APLICATION FILED DEC. 15 |917.

Patented Sept. 17, 1918.

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. Zw @zio/r.' Georg G. 1. LEONARD.

ENGlNE.

APPLICATION FILED DEC.I5.19I.

Patented Sept. 17, 1918.

2 SHEETS-SHEET 2.

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"GEORGE L LEoNAm), or CHICAGO, Immers, Assrenonlrornonnnp vALvELEss ENGINE COMPANY, A CORPORATION or MAINE; r

i Tor'wwml t may concern.'

Befftknown that I, Geenen I. Lnonann,

` a citizen `ofthe United States, residing at.

Chicago', in the county' of Cook and State of Illinois, have Iinvented anew and useful-,-

Iuiprovernent in Engines, of `which the '.follounugqis a specification.

My .invention relates more partlcularly to engines. offtl fe type employing'- intermcshing gears-driven by the introduction' of a Huid,

such fagststeann mto the interrneshing ,pers

tions of the gears;.and'n1y objects, generally stated, arcrt'oprovide-""nnproveinents `in en gnesof this general t lpe to the end that greater power may Vbe o tained from the en gine, the Wear of. arts reduced to the minimum, and smeet er running obtained.

Referring to the accompanying draw-- ingsc lgure 1 1s aview 1n end elevation, ofan engine constructed in'accordance `with my invention. Fig. 2 is a. seetional'view of the' central gear 10 and a Vplurality of inter-meshinggears 11, of relatively small diameter, grouped about the riphery of the gear 10,

' preferably at equal intervals, and provide or the introduction of the driving fluid, such as steam, into the intermeshin portions of all the gears. The gear l0 iv ich is preferably formed of two-sections 12 and 13 forming a gear ofthe herringbone va.-

' riety, as shown in Fig. 2, is rigidly secured,

as'by a ke 1 4 to ashaft 15 constituting the drive sha t of the engine and jonrnaled at its opposite endsin ball bearings 16 and 17 donated in vopenings in plates 1S and 19 re i spectively, disposed atopposlte sides of the earlO'andl rigidly secured in' iatwise ton- I :nes-hing with the teeth of the gear 10. TheY ition against the ends ofa circular hollow member v20 which forms with the plates 18 and 19, .a casing for the gears. The gears l'lfare 'also provided in sections `represented at 21V and 22, these sectionsvbeing so construeted and arranged, as shown, as `to pre- '..5ent.gfe21.rsl of"the rherringbone type inter- .Specication of Letters Pat t.

ENGINE.

Patented Septgl, 1911.8.v

Application tiled December 15, 1917. Serial N o'. 207,277.

gears 11 are secured to the shafts 23 jour.-

naled'in balLbearings 21 'andA 25 in the plates 18 and 19, respectively. The ring-shaped member 2U contains clrcuinfei'ential series of circular openingsQfi `in \\'hich.the1genrs V11 yhave journal. t, andan opening zin` which the gea-r 1,0 has ljournal (it. The ineinber 2O also contains a, series of Vopenings `29 extendingftranmersely thereof and alter mating with the openings 2(5, these openings extending 'entirelyr through -the member 2U. as represented more particulerl) in Finn l. These openings, which ferne @shrine-epassages,'conununioate respectively with p1 )es 30 opening through the plate 19. ln tlhis construction, the exhaust is through the face of the gears and by preference a plurality of exhaust-passages 3l are provided for each passage 29, the passages 31 being i0-- cated.4 in t which extend into the spaces between the adjacent gears, the forward tapering portions thereof, and which are represented at 32, being cut away along the entire length of the gears, as represented at 33, to pro.- videl spaces 'in communication with the ex haust-passages 31, to insure exhausting with out back-pressure.

The inlet ports of the engine through which the driving fluid is supplied Lo the intermeshng gears, are located at the side of the center lino of the gears opposiie imt at which the exl'must-passages are loca;

' these inlets being disposed at opposite Vof the gears,

. In this construction, the vertices of the` angles 'of the teeth of the gears at the center of the latter extend in a di reetion ::\vi1 \fro1n the driving Huid entering the casing through the inlets 34.

,Theoperation of the engine is as follows:

The driving iuid enters thechannels 3S? and is distributed to the various inlet ports 34 from-whence it discharges into the ends of ,the s aces or pockets in the gears, with the resu t of rotating the gears 11 and the gear 10 in the directions of the respective arrows. As the the gears move into re 'stration with the ports 31, the spent ilui ockets or spaces between 1e `portions of` the member 20 i iloo pressure exhausts. therethrough and passes out througli-.lligf passages 29 and pipes 30. as represent/cd by the arrows in Figs. il und -'-l.

While I have illustratml and described a particular embodiment of my invention, .I do not wish to he understood as intending to limit it thereto, as the Same may he variously modified and altered without departing from the spirit of my invention, it heing my intentionlto claim my invention as fully end con'ipletely as the prior state o1' the art will permit.

What I Claim as new and desire to secure by Letters Patent is- 1. An engine comprising, in combination, intermeshing herringbone gears, a casing for said gears closely fitting the latter except at a relatively small urea imn'lediately in advance of the point at Wliiel'i the gears intermesli, said easing being; fm'nrf-uil with side plates which Closely fit -said gears and carryingr bearings for the .shafts off .said gears, said plates containingr inlet ports for Simultaneously admitting fluid under presl sure at the outer ends of the teeth of said gears, and an exhaust-port regietering with said area. i

2. An engine comprising, in combination, in tern'ieshing imi-ringtone gears, a easing for .said gears, inlets at opposite ends of the fears with which the ends of the grooves between the teeth of the gears are caused to successively register in the rotation of the ,f fears, and an cXhapst-port for Said gears.

3. An engine comprising, in combination, intermeshing herring-bone gears, a easing for said gears, inlets at op )osite ends of the gears with which the endls of the grooves between the teeth of the gears are caused to successively register in the rotation of the gears; and an exhaust-port for said gears, the wartiees olrllie angles of the teeth of the gears at the center o the latter extending in a direction away from the fluid admitted into the easing.

GEORGE I. LEONARD. 

